Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: [Phys-L] phase change



On 03/01/2016 11:52 AM, Diego Saravia wrote:

But if you are heating the solid you will have more sublimation than
condensation

But the interface will have the equilibrium temp.

Those two sentences are inconsistent. In fact, if you are driving
the phase change, there will be (at least) an /infinitesimal/
temperature difference somewhere.

A major conceptual point underlying all of differential calculus
is that you can have an infinitesimal that is negligible for
/some/ purposes but not for all.

When driving the phase change, the sublimation temperature will
be /very close/ to equilibrium but not exactly equal. Whether
or not this is noticeable depends on how hard you are driving,
and how closely you look.